18109033458 has 32 divisors (see below), whose sum is σ = 36687119616. Its totient is φ = 5958299088.

The previous prime is 18109033457. The next prime is 18109033483. The reversal of 18109033458 is 85433090181.

It is not an unprimeable number, because it can be changed into a prime (18109033457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563541 + ... + 594807.

It is an arithmetic number, because the mean of its divisors is an integer number (1146472488).

Almost surely, 2^18109033458 is an apocalyptic number.

18109033458 is an abundant number, since it is smaller than the sum of its proper divisors (18578086158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18109033458 is a wasteful number, since it uses less digits than its factorization.

18109033458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32518.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 18109033458 in words is "eighteen billion, one hundred nine million, thirty-three thousand, four hundred fifty-eight".